两个短链化硫酸盐表面活性剂的合成,表面活性和泡性,具有以太键
Shanwei Guo1, Yong Guo2,3, Meiwei Huang2
1School of Chemical and Environment Engineering, Shanghai Institute of Technology, Shanghai 201418, China.
Langmuir : the ACS journal of surfaces and colloids
|October 6, 2023
概括
具有以太键的新短链化表面活性剂提供了改进的环境特征. 这些替代品的遗留化合物,如 perfluorooctanoic 酸 (PFOA) 显示出卓越的表面活性和泡性能.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 表面化学 表面化学
背景情况:
- 经典的长链化表面活性剂 (例如,PFOS,PFOA) 面临着由于环境持久性和毒性而受到的全球限制.
- 开发具有减少环境影响的有效替代品是表面活性剂科学中的一个关键挑战.
- 短链化表面活性剂是减轻有机化化合物污染的有希望的解决方案.
研究的目的:
- 合成和评估具有以太键的新型短链化表面活性剂,作为限制长链化合物的潜在替代品.
- 评估合成的表面活性剂的表面活性,泡性能和湿透性.
- 将新表面活性剂的性能与 6:2 FTSNa.等现有替代品进行比较.
主要方法:
- 合成两个短链化表面活性剂: 6:2 FTESNa (2) 和C72 FEESNa (4), 包含以太链接.
- 测量临界微粒度 (cmc) 和在cmc (γcmc) 的表面张力.
- 对聚四乙烯 (PTFE) 的泡性,泡稳定性和湿透性进行评估.
主要成果:
- 两种合成的表面活性剂 (2和4) 与 6:2 FTSNa (7) 相比,表现出更高的表面活性.
- 6:2 FTESNa (2) 在2.2 g/L时显示了17.6 mN/m的γcmc,而C72 FEESNa (4) 在4.6 g/L时显示了20.2 mN/m.
- 表面活性剂2和4在6:2 FTSNa (7),C72 FEESNa (4) 显示在PTFE上具有优越的湿透性上表现出增强的泡性和稳定性.
结论:
- 合成的带有以太键的短链化表面活性剂为传统的化化合物提供了可行的替代品.
- 这些新型表面活性剂在表面活性,泡和可湿性方面保持高性能,同时可能减少环境持久性.
- 这项研究为开发更环保的化表面活性剂提供了有希望的候选人.
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